Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

I'm sure a major reason W8JI leaves everything connected is because it would take him about 4 hours to disconnect it all!  :^) Jim, you have chosen to take the risk of leaving everything connected. Good for you; it shows your confidence in your own engineering. But surely you'll agree that it

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

On 5/7/2024 4:46 PM, Al Lorona wrote: In spite of all the grounding and bonding and spark-gapping and everything else you may have done, are you confident enough that you would trust it all and let the direct hit happen? Or would you disconnect everything -- you know, just in case? I suspect

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

Imagine that, somehow, you could know for certain that tonight you were going to get direct-hit by lightning on your antenna. In spite of all the grounding and bonding and spark-gapping and everything else you may have done, are you confident enough that you would trust it all and let the

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

rviceability and improved > > documentation. I hope your challenges are behind you soon! > > > > 73, Peter (VK6HP) > > > > > > > > -Original Message- > > From: elecraft-boun...@mailman.qth.net > > > On Behalf Of Jorge Diez - CX6V

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

t I/O design, better serviceability and improved > documentation. I hope your challenges are behind you soon! > > 73, Peter (VK6HP) > > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > On Behalf Of Jorge Diez - CX6VM > Sent: Monday, 6 May 2024 1

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

you soon! > > 73, Peter (VK6HP) > > > > -Original Message- > From: elecraft-boun...@mailman.qth.net On > Behalf Of Jorge Diez - CX6VM > Sent: Monday, 6 May 2024 1:42 AM > To: Mike Fatchett W0MU > Cc: elecraft@mailman.qth.net > Subject: Re:

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

We may not know the tune but the encore is sad and familiar: The cost to repair the damage is equal to the deductible on your homeowner's insurance policy. "Ask me how I know." /Rick N6XI On Sun, May 5, 2024 at 10:13 PM Jim Brown wrote: > On 5/5/2024 6:11 AM, Mike Fatchett W0MU wrote: > >

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

On 5/5/2024 6:11 AM, Mike Fatchett W0MU wrote: There is no rhyme or reason why some devices are not damaged and other are. Indeed there IS rhyme and reason, but some of us haven't learned the tune! :) 73, Jim K9YC __ Elecraft

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

On 5/4/2024 9:57 PM, Rick NK7I wrote: From your description Jorge, it sounds like you did it correctly, but missed an entry point. I don't have sufficient information to agree that what Jorge described was correct. HOW all of that is done, matters. Failure to bond all the ground rods, and

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

are behind you soon! 73, Peter (VK6HP) -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Jorge Diez - CX6VM Sent: Monday, 6 May 2024 1:42 AM To: Mike Fatchett W0MU Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

Jorge, In short, no. As has been stated repeatedly lightning protection is the responsibility of the owner, not the radio vendor. Can we move on to other topics please? 73, Adrian K7RJS > On May 5, 2024, at 10:44 AM, Jorge Diez - CX6VM wrote: > > hello > > To finish with this topic, I

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

Jorge, Your question was answered already... 73, Dave, https://www.nk7z.net On 5/5/24 10:42, Jorge Diez - CX6VM wrote: hello To finish with this topic, I was just wondering if a device that is intended for use in remote stations, always connected and in some cases with no one to disconnect

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

Asked, answered (no, there isn't a more robust device); it's up to the station owner/designer to protect the station, not a manufacturer. Let's move on please. Rick nk7i On 5/5/2024 10:42 AM, Jorge Diez - CX6VM wrote: hello To finish with this topic, I was just wondering if a device that

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

After a lightning strike took out my shack computer, all of the Ethernet switches in line to the router and the router itself, I came up with what I call an "air gap".  I use VirtualHere ($49 for the software) running on a Raspberry Pi to act as a USB server. The Raspberry Pi is connected to a

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

hello To finish with this topic, I was just wondering if a device that is intended for use in remote stations, always connected and in some cases with no one to disconnect during storms, could not have a better USB connector, for example If he tells me it can't be done, fine, my question has

Re: [Elecraft] Lightning

John, Remember the "Cone of Silence" in the old TV show Get Smart... There is a "Cone of Protection" for lightening, although it was not as funny as the "Cone of Silence" was... See: https://apps.dtic.mil/sti/tr/pdf/ADP002181.pdf and

Re: [Elecraft] Lightning

Some lightning musings My K3s network interface board took a surge on the USB part of the board a few years ago and toasted a diode and maybe a transistor (I forgot), RS232 was unaffected. Elecraft replaced the board and returned the old one. One of my to-do list items is to replace those

Re: [Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

Lightning is like wildfires which burn some houses or land but not others.  There is no rhyme or reason why some devices are not damaged and other are.  I suspect that most items were damaged but not made inoperable. Couldn't the argument be made that the computer or USB hub should do more

[Elecraft] Lightning concerns: Was: K4 Remote: My QTH vs. a friend's, many miles to the north

Thread subject changed to reflect the actual topic. It is the station owner that is responsible for lightning protection (or other environmental risks); not Elecraft or most any product vendor of any type.  To require more, would cost more (for the hardware and for the liability risk that the

Re: [Elecraft] Lightning

My antenna is a broad-banded, low-Q, folded-fan vertical, low profile at just 33 ft. tall on a city lot. It covers 160m thru 6m with just a few components in its "tuner box" at feedpoint on the ground. Of course everything is directly connected to Mother Earth ground, DC wise and RF wise,

[Elecraft] Lightning and grounding

Lightning is attracted to the highest point contact on earth from a cloud passing overhead. If your tower, or tree in the yard, the chimney on your roof, or the roof itself can be the closest to the heavily charged cloud passing just overhead. When the leader from earth, tree, building or tower is

[Elecraft] Lightning "protection"

Essentially, your antenna is a lightning rod. Lightning rods don't "attract" lightning. The dissipate the charge differential between the cloud and earth before the charge builds sufficiently to provide a path for a "leader" charge from earth to the cloud. When a "leader" is established, the

[Elecraft] Lightning

Snow static and rain also can generate a nice charge. Saw that in the 60’s had a long wire not connected to my sx-99 rcvr and end laying about 1-2 inches from chassis and drawing a nice blue arc btw them. This was in winter and snowing. 73 john Sent from my iPad

[Elecraft] lightning protection

C) From: Don Roberts To:"elecraft@mailman.qth.net" Subject: [Elecraft] lightning protection Message-ID:<1544142990.4511672.1611409655...@mail.yahoo.com> Content-Type: text/plain; charset=UTF-8 In addition to everything else suggested, I disconnect all coax cables outside my home an

[Elecraft] lightning protection

In addition to everything else suggested, I disconnect all coax cables outside my home and let them lay on the ground. I  use a trailer type connector to unplug my antenna rotator. I further use a heavy duty DPDT switch for my full wave 80 meter loop, not to ground but to open. (lightning

Re: [Elecraft] Lightning protection.

From: elecraft-boun...@mailman.qth.net > On Behalf Of Wes > Sent: Monday, August 17, 2020 8:12 PM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] Lightning protection. > > I took a quick look at these on Amazon.. Hugely expensive and very > unreliable. > > Wes N7WS

Re: [Elecraft] Lightning protection.

It looks like the fiber optic cable from Corning has 28AWG wires end to end! -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Wes Sent: Monday, August 17, 2020 8:12 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Lightning protection. I took a quick look

Re: [Elecraft] Lightning protection.

I took a quick look at these on Amazon.. Hugely expensive and very unreliable. Wes  N7WS On 8/17/2020 3:40 PM, Byron Servies wrote: FYI, Corning makes an integrated USB/fiber -> fiber/usb solution:

Re: [Elecraft] Lightning protection.

FYI, Corning makes an integrated USB/fiber -> fiber/usb solution: https://www.corning.com/optical-cables-by-corning/worldwide/en/products/usb-optical-cables.html 73, Byron N6NUL On Mon, Aug 17, 2020 at 9:11 AM Barry Baines via Elecraft wrote: > > Dave: > > > On Aug 15, 2020, at 11:05 AM, Dave

Re: [Elecraft] Lightning protection.

Dave: > On Aug 15, 2020, at 11:05 AM, Dave Baxter via Elecraft > wrote: > > FYI. > > RS232 (and other serial link type) LEMP (Lightning Electro Magnetic Pulse) > surge protectors are available from several vendors, and not that > expensive, compared to the cost of a rig, or top range PC. > >

Re: [Elecraft] Lightning protection.

FYI. RS232 (and other serial link type) LEMP (Lightning Electro Magnetic Pulse) surge protectors are available from several vendors, and not that expensive, compared to the cost of a rig, or top range PC. Often wonder why (other than expence) fibre optic links are not used. CAT & audio over a

Re: [Elecraft] Lightning Season, disconnect COMPUTER etc.

One note: Keith mis-spoke when he stated "Spare K3 board supplies are low or gone". We certainly are not stopping support and repairs for the K3 and K3S. (Of course there are some lightning damaged radios that are not economical to repair.) Though some repairs may take longer as replacement parts

Re: [Elecraft] Lightning Season, disconnect COMPUTER etc.

On 8/15/2020 8:51 AM, Jim Brown wrote: Also, this talk, first at Pacificon, next at Visalia DX, and to saveral ham clubs, all of which preceded Ward's book. forgot the link. http://k9yc.com/GroundingAndAudio.pdf 73, Jim K9YC __

Re: [Elecraft] Lightning Season, disconnect COMPUTER etc.

Ward Silver also gave a presentation on this at the QSOtoday virtual hamfest. Still available for watching. David K0LUM > On Aug 15, 2020, at 10:51 AM, Jim Brown wrote: > > On 8/15/2020 5:48 AM, John Simmons wrote: >> Grounding and Bonding, ARRL book by Ward Silver > > Yes. I collaborated

Re: [Elecraft] Lightning Season, disconnect COMPUTER etc.

On 8/15/2020 5:48 AM, John Simmons wrote: Grounding and Bonding, ARRL book by Ward Silver Yes. I collaborated with Ward on it. Also, this talk, first at Pacificon, next at Visalia DX, and to saveral ham clubs, all of which preceded Ward's book. 73, Jim K9YC

Re: [Elecraft] Lightning Season, disconnect COMPUTER etc.

Grounding and Bonding, ARRL book by Ward Silver -- 73, -John NI0K https://www.qrz.com/db/NI0K j...@kk9a.com wrote on 8/14/2020 10:02 PM: Disconnecting is not a reliable way to protect your home and station from a lightning strike. A strike can induce high voltage into your home wiring without

Re: [Elecraft] Lightning Season, disconnect COMPUTER etc.

Disconnecting is not a reliable way to protect your home and station from a lightning strike. A strike can induce high voltage into your home wiring without the antenna being connected and cause a lot of damage. There are many papers on lightning protection, proper single point grounding is a good

Re: [Elecraft] Lightning Season, disconnect COMPUTER etc.

I signed up for the ARRL-sponsored equipment insurance, which covers lightning. I also have PARADAN grounding boxes to bleed off "charge".  In 3 trees around the house, I have "lightning rods" (air terminals, now) at the 70' level, with the antenna 50' off the ground. K2BIO On 8/14/2020 2:52

Re: [Elecraft] Lightning Season, disconnect COMPUTER etc.

I took a hit a year ago in September. To make a long story short my ham desk now has 3 connections: - A single Coax - 120v - 220v All antenna switching and rotor control is via Green Heron Everywhere wireless interfaces.  My rotor boxes and switches can still take a hit but the equipment

Re: [Elecraft] Lightning Season, disconnect COMPUTER etc.

I don't know if this really helps or not, but I connect my computer to the internet through a WiFi. I have DSL which feeds a WiFi Router. That DSL modem and the router are the only things connected to the phone line. When lightning threatens I disconnect all power, ground, coax, rotator control

[Elecraft] Lightning Season, disconnect COMPUTER etc.

Hi all; I am starting to see our yearly peak of Lightning damaged radios come in for repair, August through October. It is MOST likely to come in through the COMM PORT connected to your COMPUTER (via DSL or Cable Modem). Those lines are LONG and run for miles, so a direct hit is not necessary

Re: [Elecraft] Lightning damage

YES Now lets dump the spell check Russ Sent from my T-Mobile 4G LTE Device Original message From: K9MA <k...@sdellington.us> Date: 11/7/17 7:46 PM (GMT-05:00) To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Lightning damage Not lightening, LIGHTNING! -- Scott

Re: [Elecraft] Lightning damage

Not lightening, LIGHTNING! -- Scott K9MA k...@sdellington.us __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list

Re: [Elecraft] Lightning damage

I have several series mode surge protectors. They are big, heavy and more expensive but have none of the limitations of MOV sacrificial shunt devices. I would get rid of any older MOV-based surge protection devices that are lying around. They have been known to burn. The newer ones are

[Elecraft] Lightning damage

I know personally (not FOF) of one death due to a hanging RF cable, in this case a cb antenna. Don't just leave the lead to your antenna hanging. I use very inexpensive switches from epay that have a grounded off. MOV devices only absorb a finite, unpredictable, number of hits. In other

[Elecraft] Lightning Damage

Hi Group: Well, now and then I'm disappointed that I don't have a permanent shack. However, after hearing some of those lightning stories there's certainly an additional plus side to being a portable-only QRP operator. All my gear is disconnected from the AC mains, don't have any

[Elecraft] Lightning can effect the ionosphere

I just read about an ELVE above the Czech Republic. ELVE - Emissions of Light and Very Low Frequency Perturbations. http://spaceweather.com/ has an article and an image. The phenomenon creates a red doughnut shaped ring lasting less than 0.001 seconds. It does require a more forceful

[Elecraft] Lightning Protection (was-Re: suggested PC???)

Neil: > On Jan 6, 2016, at 8:25 AM, Neil Zampella wrote: > > FWIW ... I've got everything setup wired in the shack, but everything (cable > coax, ethernet, power) runs through an uninterruptible power supply (ups). > Many of the higher end models provide not only power

Re: [Elecraft] Lightning Protection (was-Re: suggested PC???)

Two things I've found to be a big deterrent regarding lightning damage: (a) all driven grounds must be bonded back to the AC mains ground and this must be done outside of the house. I use some 1/2" flexible copper water line as my bonding conductor. It is trenched around the outside of the

Re: [Elecraft] Lightning Protection (was-Re: suggested PC???)

n.qth.net] On Behalf Of Jim Brown Sent: Wednesday, January 6, 2016 1:35 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Lightning Protection (was-Re: suggested PC???) YES! Another VERY important thing is to NEVER use "MOV surge protectors" on branch circuits. They're great a

Re: [Elecraft] Lightning Protection (was-Re: suggested PC???)

and are easy to spot defective ones. 73, Fred, AE6QL -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown Sent: Wednesday, January 6, 2016 1:35 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Lightning Protection (was-Re: suggested PC???) YES

Re: [Elecraft] Lightning Protection (was-Re: suggested PC???)

>> (b) Install a whole house surge protector at the main breaker >> panel. These are sometimes referred to as Secondary Surge >> Protectors. Usually should be installed by a qualified licensed >> electrician. The buzz word for these is "TVSS" (Transient Voltage Surge Suppressor). I recently

Re: [Elecraft] Lightning Protection (was-Re: suggested PC???)

Sorry, should have been more specific. I'm talking TV cable coax, which goes though the UPS surge suppression system, rudimentary, but it works where I'm at currently. That said, you've given me some ideas on what to do when we eventually move to someplace where I can put up more than a 60

Re: [Elecraft] Lightning Protection (was-Re: suggested PC???)

YES! Another VERY important thing is to NEVER use "MOV surge protectors" on branch circuits. They're great at the service entrance, as Bob recommends, but they CAUSE equipment damage when used on branch circuit, because the MOVs dump the lightning spike onto the Green wire, which creates a

[Elecraft] Lightning Damage at W3BW

Hi guys: Lesson learned! I should not be attempting remote ops to my station on Maryland's Eastern Shore during the summer months. We get lightning strikes, and I got creamed a couple weeks ago. Everything was hooked up, and I am now having to replace my Orion 2800 rotor, and repair or replace

[Elecraft] Lightning Strikes Twice

Yep, less than a week away from Field Day and I got hit by lightning - again. As a matter of fact, most of my work (my paid job) over the past week has been due to lightning. So far, the only amateur equipment that seems affected is my HD-73 rotor or the controller. It turns on, but the

Re: [Elecraft] Lightning Strikes Twice

I'd like to know what was grounded ? Please, Dick, n0ce - Original Message - From: Joel Black To: elecraft Sent: Wednesday, June 19, 2013 4:57 PM Subject: [Elecraft] Lightning Strikes Twice Yep, less than a week away from Field Day and I got hit by lightning - again

Re: [Elecraft] Lightning damage here

Don, Really sorry to hear that. I empathize. We lost two major appliances late June when the Derecho hit Virginia with 75 mph winds and a lightning show like I haven't seen in many years. That lightning hit was not direct, but we heard the snap in the house. It came through a wall

[Elecraft] Lightning damage here

I am currently computer handicapped because of a nearby lightning strike last evening. I think I have accessed the damage, but there may be more to be revealed once more devices come on-line. It seems the damage propagated via the wired Ethernet connections - I lost 3 (maybe 4) computers on my

Re: [Elecraft] Lightning damage here

On Thu, Aug 9, 2012 at 8:15 PM, Don Wilhelm w3...@embarqmail.com wrote: a nearby lightning strike last evening That is a bummer, Don. Lightning can make its way throughout the house by various evil means. A few years ago a strike hit a tree across the street, traveled

Re: [Elecraft] Lightning Strike - Metal Roof attracts?

Alan, Listen to Don Wilhem, he knows of what he speaks. Even if you can't get all that done, get a start on it. I live in Costa Rica and in the winter months (June-Nov) it would be /unusual/ if we didn't have a lightning storm nearly every day. If I were you I would at a minimum get that roof

Re: [Elecraft] Lightning Strike - Metal Roof attracts?

Well, I don't have as much as you do connected to the K3: two antennas; counterpoise; key; headphones; power cable; occasionally RS232 and/or audio cables. Computer has CAT5; audio cables; printer; scanner; monitor; keyboard; power; perhaps RS232 and audio to K3. (I can re-plug all this stuff by

Re: [Elecraft] Lightning Strike - Metal Roof attracts?

I didn't mean to imply that anyone should follow my example; I was just relating what I do in my relatively simple station and computer setup. I'm not about to install a sophisticated grounding system, so unplugging stuff is the next best option. I probably wouldn't go that route if my setup was

[Elecraft] Lightning Strike - Metal Roof attracts?

Hello, Unusual electrical storms here on top of hill on Sunday evening (9/11). On Saturday, the roofing contractor finished putting half of metal roof on house. Received lightning strike to roof (I think), but saw flash onto front walkway. Heard explosion right at my wall. Couldn't find point

Re: [Elecraft] Lightning Strike - Metal Roof attracts?

As far as active targeting goes, a flat, planar roof definitely does not attract lightning. Points of attraction are high, sharp pointed, conductive objects that help to form the leader (ground to air) strike. That said, lightning has a tendency to splay around and involve objects near the

Re: [Elecraft] Lightning Strike - Metal Roof attracts?

I think i've posted this before: During lightning season I disconnect everything from my K3 when it is not in use, including headphones and key. Same goes for my PC and router. I leave no cables connected to any of these boxes. It is a bit annoying, especially at the start of the season when I

Re: [Elecraft] Lightning Strike - Metal Roof attracts?

just curious how many things (actual number please) do you unplug from both your K3 and the computer/router? I know my K3 has 14 or more cables to it and the radio computer has to have at least that many again the firewall computer in the other room has 6 and the router has 3 then there is the

Re: [Elecraft] Lightning Strike - Metal Roof attracts?

: Wednesday, September 14, 2011 1:56 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Lightning Strike - Metal Roof attracts? Hello, Unusual electrical storms here on top of hill on Sunday evening (9/11). On Saturday, the roofing contractor finished putting half of metal roof on house. Received

Re: [Elecraft] Lightning Strike - Metal Roof attracts?

An alternative to unplugging everything -- create a system where everything will be at the same potential through a surge event and you will have no damage. Run a #4 (or larger) perimeter wire around your house (and any other buildings) with a ground rod at each point where it changes

[Elecraft] Lightning Strike - Metal Roof attracts?

[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent: Wednesday, September 14, 2011 6:01 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Lightning Strike - Metal Roof attracts? An alternative to unplugging everything -- create a system where everything will be at the same

Re: [Elecraft] Lightning Strike

During tstm season when I'm not using the K3 everything gets disconnected, including power cord, key and headphones. Same goes for the PC. Yes, it is a PITA but I'm so used to it at this point that I can plug everything back in with my eyes closed. 73, Drew AF2Z On Thu, 07 Jul 2011 18:11:07

[Elecraft] Lightning Strike

I recently had a lightning strike near the house, which entered on the cable line. Immediately afterword the cable modem was smoking (and hot to the touch!), and my wireless access point (WAP) was dead. Unfortunately, my PC connected to the WAP, also was dead, and my P3 and K3 connected also

Re: [Elecraft] Lightning Strike

Tom Doligalski-2 wrote: I've ordered the replacement K3 serial i/o board, but would love to get the K3 out of the update mode for the weekend (that is, now every time I turn the K3 on it is wanting an MCU load). Anyone have an idea about how to return the K3 to regular service (which is

Re: [Elecraft] Lightning Strike

The instructions are also in the K3 Utility help file, and I suspect may be newer. It is recommended that the power off be at least 30 seconds, and if that doesn't work, longer. 73, Mike NF4L On 7/7/2011 1:33 PM, Bill W4ZV wrote: Tom Doligalski-2 wrote: I've ordered the replacement K3

Re: [Elecraft] Lightning Strike

Simple power off from the power button is not sufficient. Follow ALL the instructions - remove the power plug from the K3 and let all the electrons drain from the electrolytic capacitors, then restore power and power on. When it comes alive, it should blink the LED and should be ready to

Re: [Elecraft] Lightning Strike

For those of you who are non-believers in the power of a lightning strike, check these photos: http://s993.photobucket.com/albums/af58/andyvavra/Lightning/ Photo slide show I had */EXACTLY/* the same thing happen in 2007 when lightning struck a tree in my back yard and coupled to a cable TC

Re: [Elecraft] Lightning Strike

And if it doesn't work the first time, try a few more times. Rick N6XI On Jul 7, 2011, at 4:19 PM, Mike n...@nf4l.com wrote: The instructions are also in the K3 Utility help file, and I suspect may be newer. It is recommended that the power off be at least 30 seconds, and if that doesn't

[Elecraft] Lightning

Gents, I have been hamming for 50 years this year. I have grounded towers, ham shacks, computer rooms. I was taught by a roustabout years ago that nothing works. Drill rigs are grounded every which way and when lightning strikes close or far things fry. The only way to protect any gear is to

Re: [Elecraft] Lightning protection

I think the problem is that many of our shacks are not ideally situated, and the grounding standards cannot be fully implemented. Mine, for example, is on the second floor of an old house. A low inductance ground is impossible to come by up here, and while I believe the engineering theory

Re: [Elecraft] Lightning in New Mexico

They are not big government to be scorned, they are based on God's Laws of Physics to be learned and respected. Amen! -- 73 from Ian GM3SEK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] Lightning in New Mexico

Physics is the lightning police! And I for one do not want them knocking at my door. Sent from my iPad On Mar 29, 2011, at 1:41 AM, Ian White GM3SEK gm3...@ifwtech.co.uk wrote: They are not big government to be scorned, they are based on God's Laws of Physics to be learned and respected.

Re: [Elecraft] Lightning in New Mexico

The ground police would be the local electrical inspector for new construction. If the antenna system is constructed after occupancy, the ground police would consist of the local fire dept. investigation team after the fire. Any penalty will come from the insurance company, not the

Re: [Elecraft] Lightning in New Mexico

Phil, Despite disconnecting your antennas, you still have to consider that the coax shields enter the house. Yes, ground rod #2 (and #3 and all others) are to be bonded to the AC Electrical Entry ground rod. I am not sure why that is counterintuitive to you. Yes, there is a very real

Re: [Elecraft] Lightning in New Mexico

of homes have been around longer than that. Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil Townsend Sent: Monday, March 28, 2011 10:13 PM To: Elecraft Reflector Subject: [Elecraft] Lightning in New Mexico

Re: [Elecraft] Lightning in New Mexico

!! George, W6GF --- On Tue, 3/29/11, Don Wilhelm w3...@embarqmail.com wrote: From: Don Wilhelm w3...@embarqmail.com Subject: Re: [Elecraft] Lightning in New Mexico To: Phil Townsend phi...@mac.com Cc: Elecraft Reflector  Date: Tuesday, March 29, 2011, 6:23 AM   Phil, Despite disconnecting your

Re: [Elecraft] Lightning in New Mexico

These posts on lightning protection served to get me considering my shack, etc. I had solar panels installed last summer, and on the side of the house opposite the electrical entrance panel the installers ran a wire from the PV panels, inverters, etc., down to a ground rod they put in. So I

Re: [Elecraft] Lightning in New Mexico

Dave, I believe you would get the opposite answer from a qualified electrician or your county inspector. Maybe one with the proper credentials will answer on this list. 73, Don W3FPR On 3/29/2011 12:20 PM, Dave, W8OV wrote: These posts on lightning protection served to get me considering

Re: [Elecraft] Lightning in New Mexico

...@embarqmail.com Subject: Re: [Elecraft] Lightning in New Mexico To: Phil Townsend phi...@mac.com Cc: Elecraft Reflector Date: Tuesday, March 29, 2011, 6:23 AM Phil, Despite disconnecting your antennas, you still have to consider that the coax shields enter the house. Yes, ground rod #2 (and #3

Re: [Elecraft] Lightning in New Mexico

On 3/29/2011 9:20 AM, Dave, W8OV wrote: So I asked them yesterday if there was any bonding of that rod to the ground on the entrance panel side of the house. The response was They are not bonded. That ground rod is not a system ground and does not need to be bonded to the existing grounding

Re: [Elecraft] Lightning in New Mexico

On 3/29/2011 5:12 AM, Phil Townsend wrote: As a matter of fact during the lightning season I disconnect the antennas from my gear when it looks like the Wx is gonna go south. A good idea, but the cables still enter your shack. Potentials that can create a spark a mile long won't be fazed by a

Re: [Elecraft] Lightning in New Mexico

It is a pity that the NEC is so expensive ($85 list $67 Amazon) and changes with revisions every three years. It is a book that should be on a lot of amateur's bookshelves. Not always easy reading but is very carefully written and defines best practices. Interestingly enough it is published

Re: [Elecraft] Lightning in New Mexico [End of topic soon - please limit posts]

Folks, while this is an interesting topic, we are overloading the list with the volume of posts regarding it. Let's wind it down in the next 2-3 hours. It has also been discussed in detail in many past postings that can be easily searched for in the Nabble archives. 73, Eric WA6HHQ Elecraft

[Elecraft] Lightning season is on the way in New Mexico.

Lightning question: I have driven an 8 foot copper clad rod just out side my operating station. Its about 6 feet from the rod to my desk. I have attached a solid copper wire (1/4 thick) to the ground post (with a ground rod clamp) The wire goes thru the wall and is bonded to a copper pipe that

Re: [Elecraft] Lightning season is on the way in New Mexico.

-Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Phil Townsend Sent: Monday, March 28, 2011 5:36 PM To: d...@w3fpr.com Cc: Elecraft Reflector Subject: [Elecraft] Lightning season is on the way in New Mexico. Lightning

Re: [Elecraft] Lightning season is on the way in New Mexico.

Phil, Before you do anything else, get enough #6 or #4 bare copper wire to connect that new ground rod to the Utility Entry Ground for your house. The wire should be buried to keep it out of the way of mowers, etc., but the connection is more important than where the wire runs. First, it

Re: [Elecraft] Lightning season is on the way in New Mexico.

Don, I often see this warning and I have some questions. You said: First, it is required by National Electric Code, and 2nd because it is dangerous without it. Should you have a ground fault in your house wiring, Please define a ground fault as you are using the term here. everything

Re: [Elecraft] Lightning season is on the way in New Mexico.

Hi Bob, One of the things that has been difficult for me to understand since becoming a ham is the difference between micro electronics and (for lack of a better term) macro electronics. When the leads are 0.25 thick and feet long, the potential difference at the ends of a wire is significant,

Re: [Elecraft] Lightning season is on the way in New Mexico.

Don's comments are spot on as usual - A comment about what you are trying to do. That is to provide a very low-inductance path for RF to that ground. Low-inductance conductors are: 1) Very short inductors. 2) Physically large inductors. 3) Parallel inductors. So, given you have the run as

Re: [Elecraft] Lightning season is on the way in New Mexico.

Grounding and lightning protection is not a simple subject Phil. Here's what I would recommend: If your home is wired to NEC standards, the neutral [center-tap on the pole pig] will be tied to the safety ground [green wire in your outlets] and earth at the service entrance ... only. This

Re: [Elecraft] Lightning season is on the way in New Mexico.

Bob, A ground fault is either an open ground wire in the AC wiring system, or it is more commonly a short of the hot wire to ground (could be just leakage, like leakage from a capacitor from the hot wire to the chassis). The separate grounds do not have the same resistance back to the AC

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